SHARPATYI, Victor. Formation of the System of Local Bodies of Social Security in the Ukrainian SSR (First Half of the 1920s). Scientific Papers of the Vinnytsia Mykhailo Kotsyiubynskyi State Pedagogical University Series History, [S. l.], n. 34, p. 18–27, 2020. DOI: 10.31652/2411-2143-2020-34-18-27. Disponível em: https://vspu.net/nzhist/index.php/nzhist/article/view/678.. Acesso em: 2 may. 2024.